中国物理B ›› 2014, Vol. 23 ›› Issue (5): 54201-054201.doi: 10.1088/1674-1056/23/5/054201

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Scattering and propagation of terahertz pulses in random soot aggregate systems

李海英, 吴振森, 白璐, 李正军   

  1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • 收稿日期:2013-08-07 修回日期:2013-10-07 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60971065, 61308025, and 61172031) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. K5051207014).

Scattering and propagation of terahertz pulses in random soot aggregate systems

Li Hai-Ying (李海英), Wu Zhen-Sen (吴振森), Bai Lu (白璐), Li Zheng-Jun (李正军)   

  1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • Received:2013-08-07 Revised:2013-10-07 Online:2014-05-15 Published:2014-05-15
  • Contact: Li Hai-Ying E-mail:lihy@xidian.edu.cn
  • About author:42.25.Dd; 42.68.Ay; 42.68.Mj
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60971065, 61308025, and 61172031) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. K5051207014).

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摘要： Scattering and propagation of terahertz pulses in random soot aggregate systems are studied by using the generalized multi-particle Mie-solution (GMM) and the pulse propagation theory. Soot aggregates are obtained by the diffusion-limited aggregation (DLA) model. For a soot aggregate in soot aggregate systems, scattering characteristics are analyzed by using the GMM. Scattering intensities versus scattering angles are given. The effects of different positions of the aggregate on the scattering intensities, scattering cross sections, extinction cross sections, and absorption cross sections are computed and compared. Based on pulse propagation in random media, the transmission of terahertz pulses in random soot aggregate systems is determined by the two-frequency mutual coherence function. Numerical simulations and analysis are given for terahertz pulses (0.7956 THz).

关键词: soot aggregate systems, terahertz pulse, scattering and propagation

Abstract: Scattering and propagation of terahertz pulses in random soot aggregate systems are studied by using the generalized multi-particle Mie-solution (GMM) and the pulse propagation theory. Soot aggregates are obtained by the diffusion-limited aggregation (DLA) model. For a soot aggregate in soot aggregate systems, scattering characteristics are analyzed by using the GMM. Scattering intensities versus scattering angles are given. The effects of different positions of the aggregate on the scattering intensities, scattering cross sections, extinction cross sections, and absorption cross sections are computed and compared. Based on pulse propagation in random media, the transmission of terahertz pulses in random soot aggregate systems is determined by the two-frequency mutual coherence function. Numerical simulations and analysis are given for terahertz pulses (0.7956 THz).

Key words: soot aggregate systems, terahertz pulse, scattering and propagation

中图分类号:  (Wave propagation in random media)

  • 42.25.Dd
42.68.Ay (Propagation, transmission, attenuation, and radiative transfer) 42.68.Mj (Scattering, polarization)